diyled
Well-Known Member
The boards ended up too expensive so i didn't bother stocking/testing them.
QB96 Elite V2 w/ SSTX heatsink question
- Thread starter pulpoinspace
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- qb96 qb96 elite v2
pulpoinspace
Well-Known Member
ohh bummer
WeedSexWeightsShakes
Well-Known Member
1 96 in a 2x4 isn’t gonna do it just because it has the watts lol. Still need coverage buddy.
Or_Gro
Well-Known Member
Exactomundo!
pulpoinspace
Well-Known Member
I disagree
You could do that if money was an issue and it would work fine. Could add more as you can afford them.
Obviously not an optimal setup but it would work
Or_Gro
Well-Known Member
One won’t do shit for flowering in a 2x4, just look at the maps and my 10/29/18 post on crosslighting effect.
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linderstein
Well-Known Member
I still do not know what reds use ..... nichia? lumiled? osram? 630nm ?
Or_Gro
Well-Known Member
Ask @Stephenj37826 , but i believe door number 2: 630 & 660
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would 2 be enough for a 2x4 using 320w to drive them?
Or_Gro
Well-Known Member
Short answer, yes; long answer, read the thread, then i’ll answer remaining questions
i read the entire thread a couple days i ago
I originally was planning on getting 3 QB288s for a 2x4 tent until i ran across this thread/site but now i think i want the qb96s instead.Just not sure if 2 would give good coverage
pulpoinspace
Well-Known Member
Respectfully, I still disagree. I guarantee you can flower with 1 96 on a 240-54a in a 2x4 I don’t need ppfd charts or any charts to prove it. It just won’t cover the 2x4 with an even spread. But when you get more money you can add a second board without upgrading the driver to improve spread.
If you read my original post or know me at all you know I’m not advising this I’m saying it’s not a bad start at all if it’s all you can afford. I run minimum 4 points of light in all my grow spaces personally
If you read my original post or know me at all you know I’m not advising this I’m saying it’s not a bad start at all if it’s all you can afford. I run minimum 4 points of light in all my grow spaces personally
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Or_Gro
Well-Known Member
1 in a 2x4 for flowering will suck. Besides not enuf coverage for multiple plants in a 2x4, you will either evaporate your single plant or starve it of light...that’s what the maps show...
You want to push 1 96 for flowering, try moderating the wattage/ht in a 2x2, where the walls will provide a coverage boost at reasonable ppfd.
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pulpoinspace
Well-Known Member
Yeah i agree it’s not ideal for the square footage and it will have a hot spot. But at the right height It will grow good bud in any sized space.
I’m talking a budget setup not min-maxing
I’m talking a budget setup not min-maxing
GreeneryBob
Well-Known Member
Hey, another option you might wish to explore is the growmau5 pucks from chilledtech. The V.2s have 4 red LEDs, 35 4000k, and the rest are 3000k I believe. 4 of those puppies will blast a 2x4 with plenty of light with enhanced spectrum goodness. 3 will also work okay I suppose
Or_Gro
Well-Known Member
Two will be great...2 96s are better than 3 288’s...due to 96’s supplemental reds....
you want to get a boost on this? Then, add some far red; after stretch, run it full lightson plus first 5-15 mins lightsoff - the full lightson part combines the power of the 96’s red and deep red w the far red for the emerson effect, the 5-15 mins of lightsoff for the far red initiator effect (see “the far red” thread).
But you, should already know all of this, from having read the full thread...
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Phadubious
Active Member
How far away is light to get 51.1 PPFD at 13.6 watts, and assuming just one light?
Or_Gro
Well-Known Member
21-22”
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CoB_nUt
Well-Known Member
Thank you, I was expecting a different response.
I have a request as well if you will. I'm@ 125 watts w/one light. Can you give me the ppfd @ any height you desire you want to input to get the desired readings? It's being used in veg in the tent 5sqft.
I guess what I'm asking is what height is optimal in my situation for veg. And what is that ppfd reading
Or_Gro
Well-Known Member
Why diff? Phadubious asked a question about something not posted. I know you have been reading the thread. Pisses me off having done all the work, people can’t even read the f’king thread, for things already posted.
This is quick and dirty, cuz my test gear is stored, but should be close enuff.
@ ~125w, directly under single 96:
25” ~ 300 ppfd
22” ~ 400 ppfd
18” ~ 500 ppfd
16” ~ 600 ppfd
If you look at the single 96 maps, you can get very close to this by looking at the 120w tables at diff hts. Let me know if you want me to walk you thru it, may save you time in future.
For veg, 300-600ppfd is recommended.
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